露天采矿遵循与地下采矿相同的作业顺序：钻孔、爆破、装载并运走废料和矿石。

Open-pit mining follows the same sequence of operations as underground mining: drilling, blasting, and loading and removing waste and ore.

youdao

露天采矿遵循与地下采矿相同的作业顺序：钻孔、爆破、装载并运走废料和矿石。

Open-pit mining follows the same sequence of oprations as underground mining: drilling, blasting, and loading and removing waste and ore.

youdao

介绍了炮采工作面毫秒爆破的自然条件和起爆顺序，详细阐述了毫秒管的布置方式，在实践中收到了良好的效果。

The natural conditions and order of the millisecond blasting are introduced. The arrangement ways of the millisecond pipes are expounded. It has made good result in practice.

youdao